From: Eric Armstrong <Eric.Armstrong@...>
Date: 2006-06-14T04:24:31+09:00
Subject: Re: How to invoke a run method???

Thanks to you, too, Daniel.

BTW: I notice you use $PROGRAM_NAME, instead of $0.
I take that is a recently added variable? My five
Ruby books don't seem to mention it.

--signed, Hopelessly addicted to paper

Daniel Harple wrote:
> On Jun 13, 2006, at 4:37 AM, Eric Armstrong wrote:
> 
>> I construed that post to mean that this work:
>>
>> module Foo
>>   class Main
>>     def run
>>       puts "Running"
>>     end
>>   end
>> end
>> Foo::Main.run() if __FILE__ == $0
>>
>> But the result was:
>>   undefined method `run' for Foo::Main:Class
> 
> 
> #run is an instance method. You could make it a class method:
> 
> module Foo
>   class Main
>     def self.run
>       puts "Running"
>     end
>   end
> end
> Foo::Main.run if __FILE__ == $PROGRAM_NAME
> 
> Or instigate an object of class Foo::Main:
> Foo::Main.new.run if __FILE__ == $PROGRAM_NAME
> 
> -- Daniel
> 
>